Collapsible core



T. MIDGLEY. 'COLLAPSIBLE CORE. APPLICATION FILED JAN-.6, I920.

Patnted 00a 4, 1921'.

INVENTOR TZomwsM BY I ATTORNEY UNITED STATES PATENT OFFICE.

THOMAS MIDGLEY, OF HAMIPDEN, MASSACHUSETTS, ASSIGNORTO THE FISK RUBBER COMPANY, OF CHICOPEE FALLS, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

COLLAIPSIBLE CORE.

Application filed January 6,

T 0 all whom it may concern Be it known that I, THOMAS MIDGLEY, residing at Hampden, county of Hampden, State of Massachusetts, have invented certain new and useful Improvements in C01- lapsible Cores, of which I declare the following to be a full, clear, and exact description.

This invention relates to collapsible cores, and particularly to that type of core which is adapted to be heated by the circulation of steam.

It has for its object a. collapsible core having internal connection between the steam passages of the several sections. It has for a further object the utilization of the means for fastening the sections together as the'means for conducting steam between adjacent sections. It has various other objects which will appear from the description and claims.

The, invention will now be described with particular reference to the accompanying drawings, in which- Figure 1 is an illustration 'of a core embodying this invention; and

Fig.2 is a section on line 22 of Fig. 1.

The core is composed of a key section 1.0

- and other sections 11, 12, 13, and 14, which may be varied in number as desired.- Each section has a cored-out portion 15 through which steam may be circulated. All the joints between the sections, except that one lying between the steam inlet and the exhaust, have means for allowing the steam to pass from one section to another. This means will now be described.

The shape of the joint between the adjacent sections is preferably such as to provide substantially flat and circumferential surfaces 16 which are drawn into close contact by means of a bolt 17. Referring in particular to Fig. 2, which will be understood is equally applicable to all the joints except that between the steam inlet and the exhaust, a plug 18 carrying a packing or bushing 19 is secured in the section 14:, and is provided with a passageway 20 connecting with; a

passageway 21 leading to the cored-out portion 15. A corresponding plug 22 1s sec' ired in section 10 and has a passageway 23 connecting with a passageway 24 leading into the cored-out portion 15. A ackin or bushing 25 on t is plug coacts w1th pac mg Specification of Letters Patent.

Patented Oct. 4, 1921.

1920. Serial No. 349,806.

or bushing 19 to make a steam-tight joint between the sections. Bolt 17 has a passage 26 which, when the bolt is screwed fully into position, will connect the passages 20 and 23. It will thus be seen that the bolt 17 serves two purposes; first, to draw the sections tightly together and hold the core in assembled position; and second, to provide a steam connection between the cored-out portions of the two sections. A steam inlet 27 and a steam outlet 28 are provided in sec tions 13 and 12 respectivel whereby when they are connected to suita 1e steam piping, there will be a circulation of steam through the several sections of the core. It will be understood that on the joint between the steam inlet and outlet, any or all of the passages 20, 21, 23, 24, and 26 are omitted so that the steam will be forced to take the long path through the core rather than going directly through the joint immediately between the inlet and exhaust. This joint is indicated in Fig. 1 by reference character 29.

WV hat I claim as new and desire to secure by Letters Patent is 1. A joint between two adjacent sections of a tire core comprising a bolt passing through one section and secured in the other, said bolt having a passageway extending from a point inone section to a point in the other, and a passageway in each of the two sections connecting with the first-named passageway.

2. Ina collapsible core, a pair of hollow sections sha ed at their abutting ends to providea su stantiallycircumferential portion, and a member passing between the circumferential portions of said sections 'and binding said sections together, said member providing a passageway connecting the holow interior of each of said sections with each other: v

3. In a collapsible core, a pair of adjacent hollow sections, a member passing between said sections through their abutting surfaces and connecting with the. hollow interior thereof and serving to hold said sections together, and a passageway determined in part by said member and connecting the hollow interiors of the sections with each other.

4. In a collapsiblecore, a air of adjacent hollow sections, an a mem r passing between said sections through their abutting surfaces to fasten said sections together and providing a passageway connecting the holow interiors of Said' sedtionS 'witheach other. y

5.'In a collapsible core, a pair of adja- 6 cent hollow sections, and means passing through said sections to hold them in assembled relation, said means also providing a steam passage between the sections.

6. In a collapsible core, a pair of adjacent 10- hollow sections shaped at then abutting ends to provide a substantially circumferential I portion, a plug in each section presenting abutting steam-tight surfaces, a passageway leading from each of said plugs .into the hollow interior ofits respective section, and a bolt passing through one of said plugs and screwed into the other, said bolt being provided with a passageway connecting with the passageways in the lugs;

THO Srv MIDGLEY. 

